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Annelid assemblages in soft bottoms subjected to human impact in the Urias estuary (Sinaloa, Mexico) ArchiMer
Mendez, N.
The annelid fauna inhabiting soft bottoms was analysed during February and April, 1997 in the Urfas estuary which is mostly surrounded by mangrove swamps, but is also subjected to the effect of several anthropogenic activities, Classification and ordination techniques were used to perform the characterisation of the system based on the annelid assemblages according to environmental variables (mainly organic matter content and percentage of mud). Three zones were found: (1) 'very polluted zone', in front of a slaughterhouse and a fish processing factory with a total lack of macrofauna due to the strong enrichment of the sediment in organic matters (2) 'polluted zones', characterised by the sporadic presence of oligochaetes in front of a domestic sewage...
Tipo: Text Palavras-chave: Annélides; Fonds meubles; L'estuaire d'Urías; Écosystème perturbé; Espèces indicatrices; Annelids; Soft bottoms; Urias estuary; Ecosystem disturbances; Indicator species.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/00322/43315/42939.pdf
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Estimation des stocks de poissons des lagons de Nouvelle-Calédonie : 2 – Stocks des poissons de fond et des poissons associés aux récifs coralliens ArchiMer
Kulbicki, M; Labrosse, Pierre; Letourneur, Y.
Fish stocks found on lagoon bottoms and near reefs are characterized by a high diversity and heterogeneous habitat which make stock estimation difficult. In particular, it is necessary to combine several methods in order to evaluate the major components of these stocks. The present study aimed at estimating reef fish stocks in the Northern Province of New Caledonia, a region where they represent a major target for the local fishermen. These estimates were based on experimental fishing with handlines and bottom longlines. Handlines were used to assess the stocks near reefs, and longlines for those in areas away from reefs and on lagoon soft bottoms. Handline stations (363) were sampled in three different regions (west, north and east lagoons) and three...
Tipo: Text Palavras-chave: Poissons démersaux; Évaluation de stocks; Palangrottes; Lignes à main; Fonds meubles; Récifs; Nouvelle-Calédonie; Océan Pacifique; Demersal fish; Stock assessment; Handline; Longline; Soft bottoms; Reefs; SW New Caledonia; Pacific Ocean.
Ano: 2000 URL: https://archimer.ifremer.fr/doc/00608/71969/70659.pdf
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